openstack/charm-deployment-guide
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Warn unattended-upgrades and co-located charms

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Add warning to upgrade guide concerning unattended-upgrades in
environments that have co-located charms.

Change-Id: I256a9ea2de2e152d1f2ede8312365e9fc86642da
This commit is contained in:
Liam Young 2018-03-09 10:01:22 +01:00
parent dfe4f7c37e
commit 98e4a6558f
1 changed files with 12 additions and 0 deletions
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12
deploy-guide/source/app-upgrade-openstack.rst
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@ -199,6 +199,18 @@ run:
juju run --application application-name is-leader
.. warning::
Extra care must be taken when performing OpenStack upgrades in an
environment with a converged architecture. If two principle charms have
been placed on the same unit (e.g. nova-compute and ceph-osd), then
upgrading one of the charms will cause the underlying system to be updated
to point at packages from the next Openstack release. If the machine has
unattended-upgrades enabled, which is the default in xenial and bionic, the
second charm may have its packages updated outside of juju's control. We
recommend disabling unattended upgrades for the duration of the upgrade
process, and to renable unattended-upgrades once complete.
HA with pause/resume
~~~~~~~~~~~~~~~~~~~~